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Thank you very much for your reply. What I don't understand is why
some capacitors on the pcb show the correct value, while others show nothing. How is that possible? You see there is an issue to remove all of them. We talk about 60 caps at least here...And I don't trust I can resolder them properly again, we talk about smd technology.
Well all this came from another issue. I noticed very huge spikes in the output of my voltage regulator (Should be 3.3 V but if I put the plug of the power supply on the laptop) I see 20V peak-to peak, huge overshoot, and also half are negative values. Maybe that's why some pcbs are damaged, it's not only one. So I suspect that the designer of the pcb make a mistake. According to this
https://www.digikey.com/en/articles/techzone/2012/apr/protecting-inputs-in-digital-electronics
I could avoid the spikes 1) if I add a bigger load (resistor) , or 2) a bigger cap. I m not sure where to start and loose time, so at least I checked the caps in the voltage regulator. What do you think? Below you see my power supply
View attachment 135913
Please note that the regulator is LM1086 and R3 =120 Ohms and R4 =200 Ohms, schematics updated.